The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 1998
Filed:
Mar. 18, 1997
Applicant:
Inventors:
Assignee:
Nippon Thompson Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ; G05G / ;
U.S. Cl.
CPC ...
310 12 ; 33 / ; 7447901 ; 248913 ;
Abstract
An XY table that uses linear electromagnetic actuators to achieve faster operating speeds, improve durability, prevent generation of dust and reduce size (make more compact). The cord for supplying electrical power to the linear electromagnetic actuators and the cords for obtaining signals from each type of sensor are concentrated at an intermediate movement member (X table), and gathered together into a single cord that is used for connection to the outside (controller, etc.). As a result, detrimental effects caused by the cord are minimized which enables the XY table to demonstrate the performance described above.